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who inverted electromagnetic crane

An electromagnetic crane is a type of crane with an electromagnetic lift. Electromagnetic cranes are commonly utilized in lifting and moving various scrap metals. It does not have the mechanical 'pincers' of a regular crane, instead, it has a large flat magnet which draws the metallic materials to it. Using the principle of electromagnetic induction, these large machines are used to handle scrap ferrous metals, such as iron and steel, which can be found in junk yards and recycling plants. Beyond the area of lifting magnetic materials, another use of an electromagnetic crane is that it makes for smooth and safe stops due to its solenoid brakes (electrically controlled brakes which can be turned on and off by a solenoid). These brakes are the ones being used on movable bridges as it allows the passage of boats and barges. How The Electromagnetic Crane Works: An electromagnet is a type of magnet wherein the magnetic field is produced by electric current, and the field disappears whenever the current is turned off. Electromagnets are being utilized in everyday items, just like loudspeakers and doorbells. An electromagnetic crane has a large electromagnet which can be turned on and off. The electromagnet contains an iron core with a wire around it, and this wire is the medium by which the current travels. The magnetic strength of an electromagnet relies on the number of turns of the wire around the electromagnet's core, the current through the wire and the size of the iron core. Increasing these elements will result in an electormagnet which is significantly larger and stronger as compared to a natural magnet (which explains the enormous size of the crane's magnet). For the electromagnet to be turned off, the core must be made of soft iron. Therefore, turning on the electricity will enable the magnet to work, and turning off the electricity will be able to shut it down. Dismantling the old crane Over the past years, the existing cranes at voestalpine Rotec...

In the case of electromagnetic solenoids, they are used wherever a uniform (i.e. controlled) magnetic field is needed. The same holds true for iron-core electromagnet, where an iron or other ferromagnetic core can be inserted or removed to intensify the magnet?s field strength. As a result, solenoid magnets are to be commonly found in electronic paintball markers, pinball machines, dot matrix printers and fuel injectors, where magnetism is applied and controlled to ensure the controlled movement of specific components.

Since that time, scientists have sought to test and measure electromagnetic fields, and to recreate them. Towards this end, they created electromagnets, a device that uses electrical current to induce a magnetic field. And since their initial invention as a scientific instrument, electromagnets have gone on to become a regular feature of electronic devices and industrial processes.

Electromagnets employ electricity to charge the magnet and hold the material to the magnet face. Electromagnets use an energized electrical coil wrapped around a steel core to orient particles within ferrous materials in a common direction, thus creating a magnetic field. Electromagnets are generally built to run on DC current, creating the need for a rectifier. Unlike permanent magnets, electromagnets require a constant power source. This can be viewed as either a detriment or an advantage, depending upon how the magnet is being used. A power failure can be catastrophic when using an electromagnet?though universal power supplies and battery backup systems available in today's market address these concerns. On the other hand, the ability to vary the current being supplied to the magnet allows the user more flexibility than a permanent magnet affords.

   This is a small picture for a large electromagnet. The magnet is part of a system of demonstrations at the department of physics at the University of texas in Austin. It is unmarked, but I think that it is probably German from the early part of the 20th century. The magnet moves, with some difficulty, on a solid four-wheel wagon, and the poles are about four feet off the ground. The system can be configured as a motor, can be used to demonstrate the paramagnetism of liquid oxygen, etc. 

   The electromagnet at the right is at the "Large Electromagnet for diamagnetic and paramagnetic experiments" listed at 550 marks (about $130) in the 1900 Max Kohl catalogue. Originally it was equipped with heavy-duty casters to enable it to be moved around, but at some point the demonstration room personnel at Cornell University put it on a sturdy cart so that it could be seen in lecture demonstrations. The coils should be painted red, and the base, gloss black.

   Sturgeon insulated the iron and wound bare wire on it, but Joseph Henry (1799-1878) took the final step of insulating the wire. His largest electromagnet, built in 1832, could lift 3600 pounds One of his original electromagnets is in the Smithsonian Institution collection. 

These albeit revolutionary feats aren’t quite the same as lifting police cars on command. As well as being really effective at clearing a traffic jam, lifting large metal objects on demand would be a really handy ability to have. But, is it practical to make an electromagnet with such a power? Maybe not strong enough to lift cars (probably for good cause), electromagnets have been created to be handy tools at scrap yards. Here, electromagnetic cranes can lift piles of heavy scrap metal, on command! Just like Magneto! The electromagnet approaches the scrap then an electric current is turned on and the electromagnet suddenly creates a magnetic field that attracts all of the scrap metal to be lifted and moved!

Within wind turbines and hydroelectric dams, magnets are moved about to generate the electricity that we so bountifully enjoy. Induction is also the central principle behind Electromagnets, which are devices that use a current of electricity to produce a strong magnetic field on command. The electromagnet creates a magnetic field only when an electric current flows through it. This is how non-mutant regular Joes are able to gain Magneto’s power to create magnetic fields: by using a current of electricity.

Using electricity, we can create magnetic fields to move things around. In fact, this is the basic principle behind the electric motor, which was invented in 1832! A motor converts electricity into motion by using induction. These motors are found in many of our household appliances such as fans and laundry machines. Who would’ve thought that Magneto would be so effective at washing our laundry?


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